Prism Deploy Ver 9 silent install

We are using the Prism Deploy Ver 9 on Windows 7 and want to create a silent install of only the Prism Deploy client.

When creating a Setup.iss ( setup.exe /r ) for silent install its not capturing the dialog box after the serial # dialog. We have to click the Next manually and then it completes the install. Looks like this is a custom dialog and is not getting captured in the answer file.

Any one successful in deploying this client in a silent way? Any help appreciated.